‘Mysterious’ zika surge to worsen warns World Health Organization

The head of the World Health Organization (WHO) has warned that the zika outbreak would likely worsen before nations besieged by the mosquito-borne virus linked to thousands of birth defects in Brazil see relief.

Director-general Margaret Chan made the comments at the end of her two-day visit to Brazil, the country at the epicentre of the Zika crisis.

“Things may get worse before they get better,” Ms Chan said at a news conference in Rio de Janeiro. “Don’t be surprised to see microcephaly reported in other parts of Brazil.”